388 REMARKS ON THE OAMARU DIATOM PAPERS. 



forma gibbosa, of which title, from the reference to Herr Grunow 

 in the text, it would appear that he now approves. — E. G.~\ 



Tr. spinosum var. ornata, Gr. and St. A very different species 

 to Tr. spinosum, and may be named Tr. (Ornatum, Shadb. 

 var. ?) fallaciosum, Grim. 



Tr. venulosum var. major, Gr. and St. Also a distinct species. 

 [The authors have agreed to adopt the specific name of Tr. 

 majus for this, under which it is figured in Atl. PI. CXXVIL, 

 Fig. 1. Fig. 3 in the same Plate, named Tr. venulosum, var?, 

 and also very frequent in the Oamaru deposit, differs but 

 slightly.— #. £.] 



Tr. Dobreeanum, Grev., var. Nova Zealandica, Gr. and St. Does 

 not agree with Tr. Dobreeanum, but is closely allied to Tr. lineo- 

 latum, Grev. Very variable, with sides from O08 to 0*42 mm. 

 [This is distinct enough to justify the specific name of Tr. Nova 

 Zealandica, Gr. and St. — E. 6r.] 



Tr. crenulatum forma gibbosa, Gr. and St., should be Tr. un- 

 datum, Grun. [Gibbous forms of Tr. crenulatum are common 

 in the deposit, but the form figured by the authors in Part 2, 

 PI. II., Fig. 4, is no doubt a distinct species, and is rightly dis- 

 tinguished by Herr Grunow as Tr. undatum. — E. G.~\ 



Tr. capitatum (Ralfs ? ?), Gr. and St., should be Tr. (capitatum, 

 Ralfs, var. ??) castelliferum, Grun. [The form figured under 

 this name in Atl. PI. CXXVIIL, Figs. 17, 18, is that which the 

 authors included in the list as Tr. trisulcum, Bail. (Pt. 4, p. 8). 

 The species which they named Tr. capitatum, Grev. (Pt. 1, p. 6), 

 is given in Fig. 19 as Tr. glandarium, A. Sch. — E. G.~] 



Tr. castellatum, West. Mostly occurs with a small, sharply 

 marked, punctated space at the angles, which Herr Grunow 

 designates var. fracta, as it is, perhaps, identical with Tr. 

 fractum, Walker and Chase. 



Tr. Morlandii, Gr. and St. Herr Grunow proposes to add 

 var. sub-aperta, Grun., for varieties in which the ring of 

 meshes round the centre is more or less incomplete in three 

 places. Such forms greatly resemble Entogonia davyana, Gr. 

 and St. (nee. Grev.), which Herr Grunow provisionally desig- 

 nates var. aperta. 



Tr. Grayii, Gr. and St., in Uteris, instead of Tr. barbadense, 

 Gr. and St., nee. Grev. 



Tr. plenum, Gr. and St., in Uteris, instead of Tr. Weissflogii, 

 which name was adopted shortly before by Messrs. Walker and 



